Thanks for the information. I purchased a HK42FZ011
control board from a local furnace company and it
took care of the problem. I also, notice that the
sequence in which the furnace cycle was reverse from
the old board. With the new board the exhaust blower
comes on for 30 seconds followed by the igniter
illuminating turning on the burner. After 60-90
seconds the main blower comes on. With the old
board the main blower came on first for 60-90 seconds.
Observing the sequence may help to determine if it
is a control board problem.